Metallic derrick.



P. YORKE. METALLIC DERRICK.

APPLICATION FILED OCT-18, 1913.

Patented Mar. 24, 1914 PAT RICK YORKE ins Ar rib a treat ses.

To all'whomitmay concern. v

Bait known that I, PATRICK YoRKE, a ion of; the United States, residing at iashington, in the county of Washington our new and useful Improvements in al-lic Derriclis oi which the following 1s ipanying drawings.

ntionrelatcs to lll'lP'l'OVGlDOlllS in is .t'oruseindrilling oil, gas, n-wells although equally ap- 1 nci'ihle tor miningshat-ts hoists and other towers wine-rally, and it has for its primary an apparatus or structure of this li iilm parts of which are so constructcd; and arranged that they may be quicklyassembled and disassembled without utting in or, taking-out a single bolt. ifannliar With the art to WhlCll the;

thisinven n appertains, it is wellknown that in drillin wells, for example, it is mmay be c;

alwa e at-hand when desired again for a s quent assembling oftbe parts, none of lost but being immediately vat h at; the sa ne time as is evident, rill only be necessary for the rigger" leave the derrickpermaover the .Well after it has and, consequently, it is a evidea structure which .c erected anddisniantlcd at a miniof coetanol quickly and with comparalabo and. hence my invention oil its aspects. to attain this rein one which, will possess to a marked led expeditiously and without s eila]. tools and with a mlnimum n. this result, my invention actors of this character in is 1113"" be quickly connected ftieuse, 0'31 boltsfitting in slots so edges of the parts, in con- )1] u to. holes, whereby it is only cesary id dismantling the derrick or nee tower, to slightly h loosen the nuts, on the :i'rely removing the latter,

bolts whe 1 upon t1 to-oe equipped with. a hand wrench or simi- State oflcnnsylvania, have invented oification, reference being had to the "to provide a derrick or similar the susceptibility of being erected log sections braces and girts d, leaving the bolts 1n the parts Wino i' can them, so that they will.

- l MET AIIiLIC DERRICK.

\ Specification of Letters Patent. Patmited 1313 Ap lication filed October 18, 1913. Serial No. 795,987.

la'r sinall tool to tighten up the nuts again on the bolts when the parts are assembled.

It will at once be apparent that holes or openlngs lylng' entirely \wltlnn the margins failure on the part of the gcr to tighten up the nut securely, and such event, the I parts thus caught or entangled might .become entirely detached and fall or otherwise cause damage to the structure and accident. to the workmen or others. r

With a knowledge of these conditions, it is a further object of my invention to pj'rovide very simple means whereby the bolts may be received in openings which will possess not only the advantages of the notch or recess formation but. the advantages of the hole formation also, and to this end my invention forth 1' consists in bolt re ceiving openings which openout into the edges of the parts in which they are forlne'd,

them; and this ,inovemcntmust of necessity be suflicient to preclude any accidental. dis: placement of the bolt owing to a slight and unintentional loose conditlon of the nut.

To PATRICK HENRY,

already as- With these and other objects in View as will more fully appear as the description proceeds, the" invention also consists in certam constructions, arrangements and combinations of the parts that I shall hereinafter fully describe and claim...

For a full understanding of the invention reference-is to be had to the following de- Figure l isa side elevation of a portion scription and accompanying drawing, in

ofa derrick vembixiying the improvements of my invention; Fig. 2 is an enlarged fra' dri ling derrick is .1, ting'and at the mentary view thereof; Fig. 3 is a detail sectional view hereinafter specifically referred totnnd Fig. 4 is a fragmentary perspective view of one of the bolts. Y

Corresponding and like arts are referred to in the following description and designated in all of the views of the accompanying drawing by like reference characters.

n describing the invention in detail, it is 10 to be borne in mind that the embodiment of the invention illustrated in the accompanying drawing is for the purpose of illustration only and that hence only the vertically dis osed or extending portion of a wellshown, the drilling rigs purposely omitted as unnecessary to a and imbeing full understanding of the principles .provements of the inventive idea.

' In the drawing, the numeral 1 designates lo the base of the derrick, 2 the upwardly converging legs as a whole, 3 the girts which extend horizontally from one.le to another i and 4 the leg braces. Prefertiloly the side and 'cross sills of the bars are of channel for motion while the legs, girtsand braces are of angle material. The le s 2 are built up or formed in sections 63.01 of which is fi z designated 5. The sections are disposed in lon itudinal alineso. ment with each other with t eimends abutjoints of the sections splice bars 6 are disposed in overlapping. relation to the adjoining section, as clearly illustrated in the drawing. These splice bars are :5 riveted, as at 7, to the subja-cent sections and are formed at their upper edges with up wardly opening and vertically disposed recesses 8 into which are designed to fit the bolts 9 that are carried by the superjacent and abutting leg sections in an evident manner. Said last named leg recesses 10 for acand downwardl opening immediately conheads of t e bolts immediately next to theinner faces of the latter.

From as much of the specification as has preceded in connection with the correlated views of the accompanying drawing, it will be manifest thatthe parts may be very readilyassembled rand the derrick structure so erected, owingitq, the bolt receiving slots of v the sphce-bars 6', leg sections and girts and braces; and it is to be articularly noted that in the assembli o "the parts, when the nuts are tighten up on the threaded ends of the bolts, the lugs 13 being received in of the bolt a distance sufiicient to sections are formed in then lower edges with vertically disposed the notches 12 will securel prevent any of the parts ward pull, even though the nuts. have not been tightened sufiiciently. by-the riggers to revent such separation were it not for this ug and notch connection which renders it impossible for the girt, for example, displaced by any upward movement, until the nuts have been loosened sufficiently to ermit-of alongitudinal or axial movement remove the lug entirely from the notch.: And even though the nuts might be accidentally left loose enough for this axial movement of the bolts, yet, as the bolts in the present instance are shown in horizontal position, it-is at once apparent-that the In and notch arrangement of itself will ten to preclude the liability of accidental displacement.

It is to be understood that the invention from being disp aced by any upis not limited to any particular construction or arrangement of the parts, except as defined by the appended claims, and that various changes ma be made in construction, arrangement an proportions, without departing from the scope of the invention such as the claims define. For example, I have shown for the purpose of illustration a'connection between one of the cross sills 1 of the base 1 and one of side sills 1' thereof. Itwill be seen that angular brackets 1e are riveted to the opposite sides of the cross sill 1 atthe ends thereof, the outstanding members of the brackets being adapted to abut against the inner faces of the side sills 1" and being formed with downwardly opening bolt receiving recesses 11 for the bolts 9, these recesses 11 being formed in their side walls with laterally extending notches 12 for the lugs 13 of the bolts.

Various other applications of the inventive idea might be illustrated and described, but it is believed that the foregoing, in connection with the accompanying drawing is su'fiicient to enable those skilled in this art to practice the invention and to. thoroughly understand the principles and improvements thereof.

It will be seen that by the use of the construction and arrangement of the parts de scribed and illustrated, the structure embodying these improvements may be quickly erected'and dismantled without the use of special tools and in a 'simpleand expeditious manner without puttinginortaking out a single bolt, the bolts being left in the parts which are designed to; carr them whereby they will always beat ban "and not be liable to become lost, provision of the lugs'and notches in-which they are intended tobe. received, will prevent all accidental displacement by any while at the same time the u ward ull or strain thereby clearly preclud danger and accident as set tion and overlapping the lower end of a superjacent section, said last named section being formed in its lower edge with a downwardly opening recess, the splice bar being formed in its upper edge with anupwardly opening recess, said recesses being designed to accommodate bolts, a girt formed in its lower edge with a downwardly opening recess by which it is adapted to slip over a bolt received in the leg recess, and a brace formed in its lower edge with a'downwardly opening recess by which it is adapted to be slipped over a bolt in the splice bar recess, bolts in said recesses, the recesses in the girt and brace being formed in the walls with laterally exten mg notches and the bolts being formed "with lugs receivable in said notches.

2. In a structure of the character described, legs formed in sections designed to be placed in abutting relation with each other, splice bars rigidly connected to the upper ends of a tend above a superjacent section, bolts carried by the splice bars one above the other section and adapted to ex upper edge of said super acent section, another bolt carried by said superjacent section above said last named bolt, there being aniupper and a lower and an intermediate bolt, said superjacent section being formed in its lower edge with a downwardly opening recess whereby it is adapted to he slipped and the upper one being located above the down into the upper end of the splice bar a over the intermediate bolt, the splice bar being formed in its upperedge with an upwardly opening recess adapted to receive the upper bolt, and girt, the braces being formed with down wardly opening recesses by which. they are adapted to be slipped down over the upper and lower bolts and the girt being formed with a downwardly opening recess by which it is adapted to he slipped over the inter: mediate bolt, the recesses of the braces and girt being formed in their walls with laterally extending notches and the bolts being formed with lugs receivable in said notches for the purpose specified.

In testimony whereof I hereunto afiix my signature in the presence of two witnesses.

PATRICK YORKE.

Witnesses D. W. GALL, FREDERICK S.

braces and an intermediate 

